4,064 research outputs found

    The Bees of A.L. Mangham Jr. Regional Airport, Nacogdoches, Texas

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    The United States is home to about 4,000 species of native bees, and many are critically important due to the pollination services they provide (Buchman & Nabhan 1996). Most of these are inconspicuous, solitary bees that nest in the ground. In recent years, a number of bee species have been shown to be in decline (Burkle 2013). Due to these declines, it is important to study and provide habitat for local bee populations. As a result of periodic mowing, the surroundings of the A.L. Mangham Jr. Regional Airport in Nacogdoches County, Texas provide a grassy, prairie-like habitat that results in a high diversity of wildflowers. This site may contain high bee diversity as well. In order to explore this possibility, a survey of bees at this location was conducted in the late summer and fall of 2016

    A new species of Quexua from southeastern Peru (Hymenoptera, Crabronidae)

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    A distinctive new species of the crabronine wasp genus Quexua Pate is described and figured from a single male collected from lowland Amazonian rain forest in southeastern Peru. Quexua cicra sp. n. is the only species in the genus known with a sessile metasoma

    Phylogenetics of Crabronini, with a consideration of the evolution of predatory and nesting behaviors (Insecta: Hymenoptera: Crabronidae)

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    The phylogeny of the genera of the wasp tribe Crabronini was estimated based on a cladistic analysis of 177 adult morphological characters and a sampling of 120 taxa. This represents nearly 80% of the genera of Crabronini and also includes relatives from the tribes Oxybelini, Bothynostethini, and Larrini. In the resulting strict consensus tree, the tribe was recovered as monophyletic, but its constituent subtribes, Anacrabronina and Crabronina were not. A major clade comprising about half of the genera of the tribe was recovered with strong support. Based on these results, the current classification is evaluated and the following nomenclatural changes are suggested: 1) Entomognathus should be excluded from the Anacrabronina and recognized within a new subtribe, Entomognathina; 2) Quexua and Holcorhopalum should be transferred to the Anacrabronina; 3) Ectemnius and Williamsita should be synonymized with Lestica. The evolution of predatory and nesting behaviors are discussed in light of the new phylogenetic information. Nesting in the ground is ancestral for Crabronini. The number of transitions to plant-nesting is ambiguous; it has arisen anywhere from one to six times. Reversals to ground-nesting have occurred five to nine times. Predation on Hemiptera is likely ancestral for the tribe, and predatory behaviors largely correspond to subtribal categories. Anacrabronina (in the suggested sense) prey mainly on Hemiptera, Entomognathina prey on Coleoptera, and Crabronina are mainly Diptera predators. Transitions to novel prey items have occurred numerous times in the latter group

    A Cladistic Analysis of Hawaiian Ophionine Wasps (Hymenoptera: Ichneumonidae)

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    M.A. University of Kansas, Ecology and Evolutionary Biology 2004A cladistic analysis was performed on 29 of the 31 known species of Hawaiian ichneumonid wasps of the subfamily Ophioninae, based upon 64 adult morphological characters. Outgroups consisted of 17 species of Enicospilus, one species of Leptophion, and Dicamptus (scored from a genus description). Outside of an undescribed species known only from a single specimen, increased support was found for the existence of one Hawaiian clade of Ophioninae. The group is presently divided into multiple genera, of which most species are placed in the speciose and cosmopolitan genus, Enicospilus . Maintenance of the nominal taxa Pycnophion, Banchogastra, and Abanchogastra at generic rank renders Enicospilus paraphyletic (as has been noted by other authors) or polyphyletic. Nomenclatural changes are recommended, including those that would serve to ensure, at a minimum, the paraphyly of Enicospilus. The consequences of nomenclatural changes necessary to enforce strict monophyly of Enicospi/us are discussed, as are the distribution and evolution of atypical morphological features unique to the Hawaiian ophionine fauna

    A New Moustache Wasp in Dominican Amber, with an Account of Apoid Wasp Evolution Emphasizing Crabroninae (Hymenoptera: Crabronidae)

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    A new, extinct species of the wasp genus Lindenius (Crabroninae: Crabronini: Crabronina) is described and figured from two exquisitely preserved specimens discovered in Early Miocene Dominican amber. Lindenius paleomystax, new species, represents the first record for the tribe Crabronini in Dominican amber and the southernmost record for the genus in the New World. The unique locality and habitat data begin to reveal a more complicated natural history for the genus than that suggested by Recent taxa alone. A checklist of fossil apoid wasps in amber is provided and the new species is discussed within the context of an overview of apoid wasp origins and evolution

    Pison Menkei, a New Crabronid Wasp in Dominican Amber

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    A new crabronid wasp species, Pison menkei sp. n., is described and figured from a single female preserved in Early Miocene (Burdigalian) Dominican amber. The fossil is herein distinguished from extant and extinct congeners and regarded as an isolated species removed from modern Neotropical species groups. It is the seventh named fossil Pison and the second from Dominican amber

    To The Knowledge of Trigonalyid Wasps (Hymenoptera: Trigonalyidae) of Sakhalin

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    The northern border for the distribution of the Trigonalyidae on Sakhalin is moved northwards to 49° N. The genus Orthogonalys Schulz, 1905 and O. elongata (Teranishi, 1929) are new for Sakhalin fauna

    GHZ extraction yield for multipartite stabilizer states

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    Let ∣Ψ>|\Psi> be an arbitrary stabilizer state distributed between three remote parties, such that each party holds several qubits. Let SS be a stabilizer group of ∣Ψ>|\Psi>. We show that ∣Ψ>|\Psi> can be converted by local unitaries into a collection of singlets, GHZ states, and local one-qubit states. The numbers of singlets and GHZs are determined by dimensions of certain subgroups of SS. For an arbitrary number of parties mm we find a formula for the maximal number of mm-partite GHZ states that can be extracted from ∣Ψ>|\Psi> by local unitaries. A connection with earlier introduced measures of multipartite correlations is made. An example of an undecomposable four-party stabilizer state with more than one qubit per party is given. These results are derived from a general theoretical framework that allows one to study interconversion of multipartite stabilizer states by local Clifford group operators. As a simple application, we study three-party entanglement in two-dimensional lattice models that can be exactly solved by the stabilizer formalism.Comment: 12 pages, 1 figur

    Pison menkeiy a new crabronid wasp in Dominican amber (Hymenoptera: Crabronidae)

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    This is the publisher's version, copyright by Akademie Verlag.A new crabronid wasp species, Pison menkei sp. n., is described and figured from a single female preserved in Early Miocene (Burdigalian) Dominican amber. The fossil is herein distinguished from extant and extinct congeners and regarded as an isolated species removed from modern Neotropical species groups. It is the seventh named fossil Pison and the second from Dominican amber

    A classical analogue of entanglement

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    We show that quantum entanglement has a very close classical analogue, namely secret classical correlations. The fundamental analogy stems from the behavior of quantum entanglement under local operations and classical communication and the behavior of secret correlations under local operations and public communication. A large number of derived analogies follow. In particular teleportation is analogous to the one-time-pad, the concept of ``pure state'' exists in the classical domain, entanglement concentration and dilution are essentially classical secrecy protocols, and single copy entanglement manipulations have such a close classical analog that the majorization results are reproduced in the classical setting. This analogy allows one to import questions from the quantum domain into the classical one, and vice-versa, helping to get a better understanding of both. Also, by identifying classical aspects of quantum entanglement it allows one to identify those aspects of entanglement which are uniquely quantum mechanical.Comment: 13 pages, references update
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